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2 Sheets-Sheet 1 VENTORS Filed July '7, 1924 H. A. BRIDGES ET AL Dec. 22, 1925- METHOD AND APPARATUS FOR REFORMING GLASS ARTICLES Dec. 22, 19'25- 1,566,520 I H. A. BRIDGES ET AL METHOD AND APPARATUS FUR REFORMING GLASS ARTICLES I V Q INVENTORS w M Patented Dec. 22, 1925.

UNITED STATES,

HARRY A. BRIDGES AND JOHN WIVI. LAMIPARTER, OF SAPULPA; OKLAHOMA, AS-

SIGNOBS TO THE BARTLETT-COLLINS A CORPORATION OF OKLAHOMA.

GLASS COMPANY, OF SAEULPA, OKLAHOMA,

METHOD AND APPARATUSHFOB RE-FORMING ena'ss ARTICLES;

Application filed July 7,

To all whom it may concern:

Be it known that we, HARRY A. BRIDGES, a citizen of the United States, residing at Sapulpa, county of Greek, and State of Oklahoma, and JOHN LAMPARTER, a citizen of the United States, residing'at Sapulpa, county of Greek, and State of Oklahoma, have invented a new and useful Improvement in Methods'and Apparatus'for Re-forming Glass Articles, of which the following is a full, clear, and exact description.

The present invention relates broadly to the re-shaping or re-forrning of glass articles, such as tumblers and the like, during their manufacture. j 7

An object of the invention is to provide an apparatus for this purpose whereby the cost of production of such articles may be reduced while maintaining their quality and durability comparable with articles reformed by the former hand finished method.

Other objects and advantages of the invention will be apparent as the description proceeds.

In the accompanying drawings, there. are

shown, for purposes of illustration only, certain embodiments of our invention, it being understood that the drawings do not define the limits of the invention, as changes may be made in the construction and operation therein disclosed without departing from the spirit of the invention or scope of our broader claims. In the drawings Figure 1 is a view partly in elevation and partly in vertical section illustrating one embodiment of our invention;

Figure 2 is a top plan view illustrating the re-forming cup and the means for supplying a cooling medium thereto;

Figure 3 a modified form of re-forming member;

Figure 4 is a vertical sectional view illustrating another modified form of re-forming member; and

Figure 5 is a top plan view of the reforming structure shown in Figure 4.

As illustrated in the drawings, our apparatus comprises a table 2 which may be supported in any suitable manner in an elevated position relative to the floor. Preferably the table 2 will be mounted upon a is a vertical sectional view of 1924. Serial No. 724,580..

wheeled support (not shown) in order to render the apparatus portable. r

., Referring to the construction shown in Figurel, fastened to the under side of the table by means of bolts 3 is a hanger or;

bracket): providedwith spaced bearings 5 through an opening 9 in the'table 2 and the chuck being positioned in a horizontal plane slightly above the upper face of the table,

Interposed between the lower end of the hub, 7 and the upper side of the upper bearing 5 is a thrust bearing 10 and mounted, upon the shaft 6 and engaging the upper side of the lower bearing 5 is a worm gear 11. The

worm gear 11 is in engagement witha worm 12 driven from any suitable source of power,

such-as a motor (notshown) suspended from the under side of the table 2 The rotatable chuck 8 is provided with, v

means whereby a suitable re-forming member such-as the cup 13 shown in Figure 1 or the member 14 shown in Figure 3, may be,

quickly attached thereto or detached there-Q from. For this purpose,the chuck ha-s'a plurality of headed pins 15 projecting at,

intervals above its upper marginal surface. These headed pins are adapted to cooperate with key-hole slots16 in an outwardly ex tending flange 17 formed on the lower end of the reforming member. 1 The re-forming member 1s provided with a c1roular exten- 'sion 18 projecting below the base flange 17 and fitting in a circular recess 19 in the chuck to thereby center the re-forming mem-' her with respect to the chuck. The chuck is also providedwith a locking pin 20 working if in a recess in said chuck, the head of said pin being normally maintained above the upper surface of the chuck by a spring 21. v

In attaching the reforming member to the chuck, said member is applied thereto so that the heads .of the pins 15 will pass through the enlarged portions of the slots 16 and the member is pressed downwardly to seat it upon the chuck and to depress the pin 20 against the action of the spring21. The member is then rotated to position the pins 15 in the narrow portions of the slots 16 and to allow the head of the locking pin 20 to snap into the recess 22 in the member. In this position of the parts, the heads of the pins engage the. upper surface of the flange 17 and hold the re-forming member on the chuck. l Vhen it is desired to remove the re-foriiiing member, it is only necessary to" first depress the pin 20 by means of a suitable tool inserted in the opening 22 until non; of the reduced portion with the lower portion of said standard. An arm 27 is mounted upon the reduced portion by means ofa collar 28; at One'end of said arm surrounding said reduced portion and resting upon said shoulder 26. The arm 27 is adapted to be angularly adjusted with respect to the'standard'i 23' and secured in adjusted position by means of a set-screw 29 carried by said collar 28 for engagement with said: reduced portion 25'.

A lever'30 is provided at one end with a sleeve 31 by means of which said lever is journaled upon the reduced portion 25 of 7 said standard, the said sleeve engaging the upper end of the collar 28; The lever 30 has securedthereto by meahsof a bolt 32 a clamp 33 holding a pipe 34 The pipe 34 carries at its lower end a suitable nozzle 35 and has secured to its upper enda valve casing 36' through which extends the stem 37Lof 'a spring-pressed valve (not shown).

Referring to Figure 2, it will be seen that the arm 27' carries ascrew 38 formingan adjustable stop and that a coil spring 39 fastened at one end. to the arm and at the otlierend to the lever 30, normally maintains said lever against the. stop, t p

A pair of spaced clamp" brackets is ca'r ri'ed by the reduced portion 25 of the standard 23 above the lever 30, eachclamp bracket having a split collar surrounding said reduced portion and clamped thereto means of abolt 41. Each bracket 4.0 isp rov'ided in its upper surface with" a'cha'nnel' L2 to receive a guide plate 43, which is adj ustably secured in said channel by means of a bolt 44 extending through a slot l5 in the plate. The outer extremity of each plate 43 is forked to receive the guiding stem 46 of a punty 47. v p

By reference to Figures 1 and 2, it will be apparent that the valve stem 37 is in the plane of the lower clampbracket i0. In this position of the parts the valve is closed in order to move the nozzle 35 in position to supply a cooling medium to the reforming member on thech i'ok 8 and to open the valve, it is necessary to rotate the lever 30 away from the stop screw 38 until the valve stem 37 engages and is pushedin wardly by the edge of the bracket. The valve casing 36 is connected by suitable means (not shown) with a source of fluid supply constituting a cooling medium, so that when the valve is unseated the cooling medium will flow', through the nozzle 35 upon the shaping surface of the reforming member. In order that the valve ste'rn'. nriay abut squarely against the of the lower bracket 4:0,a notch is formed in said edge to provide the inclined surface 48.

As shown in Figure 1, the re-forming member 13 is generally cup shaped. The internal surface of this cup-like member is formed of material which will not in any way mar or injure the glazed surface of the glass article, such as thetum'bler 49, carried by the punty 47. The shape of the internal surface of the member13 i'ssuch that a ver parent by'reference to Figure 2 wherein the member 13 is shown as having a hexagonal shape in its interior,- it being understood, however, that the number of sides may be varied as desired, v V W o a The operation of the apparatusdescribed substantially as'fol'l'o'ws'; The glass article to be re-formed', such as the tumbler 49 shown in Figure 1, is fastened to the punty 47 by sticking said punty to" said article. The article is then reheated to glaze and soften the same. The stem 46 of the punty is" then passed between the g'ui cjliiig forks of the plates 43 and thefpunty lower d to enter the end of the article 4C9 into the revolving cup 13. As the resha ing or re-forming progresses, the punty is gradually lowered un'- til a stop collar 50 adj'ustably: secured to the stem 46 by mean's of a" set-screw 51 engages the lower guide plate 43. The adjiista'ble stop regulates the depth to which the article 4E9" enters the cup member 13. when the article has become set in the new shape indicated in dotted lines in Figure 1,; the punty is raised to remove the article from the re-forming' member 18 and the article is then removed from the punty.

The purpose of giving the internal sun. face of the reforming member a polygonal instead of a circular shape, as above explained, is to cause a series of waves in the walls of the glass article while hot andplastic, the diameter of portions of the article being gradually reduced and'the walls thereof becoming thicker as this difierence in diameter takesplace. The gradual reduction in diameter and working of the glass by means of a polygonal surface eliminates the danger of buckling the glass, such as would occur if it were attempted'to simultaneously reduce the entire perimeter of the glass body.

During the reforming operation it is necessary to regulate the temperature of the shaping surface of the re-forming member.

I This is accomplished by means of the cooling medium supplied through the nozzle 35 whenthe controlling valve is unseated by rotating .the lever 30 away from the stop 38 to bring the valve stem 3? into engagement with the edgeof the lower clamp bracket 4:0 and position the nozzle 35 over the upper end of the re-forming member, as already explained. The cooling medium may be applied to the re-forming member at desired intervals and when said member is sulficiently cooled the lever 30 may be released and the spring 39 will immediately draw said lever against the stop 38 and the controlling valve will automatically close. The cooling medium will preferably be a liquid and in the construction shown in Figure 1, where a cup-like re-forming member is employed, the waste liquid may be drained away through the hollow shaft 6.

In case it is desired in re-forming the articles to give them an outward flare in stead of a reduced diameter at their open ends, a re-forming member in the form of the frustum of a pyramid may be employed instead of the cup-like member 13. This modified form of re-shaping member is illustrated in Figure 3.

In Figures t and 5 a re-formingmember 52 is shown similar in shape to the re-forming member 14 illustrated in Figure 3, but made in a plurality of parts, whereby such parts may be moved relatively to each other in the re-forming operation for the purpose of varying the shape of'the article being re-formed. The member 52 is carried by a chuck 8, the hub 7 of which is keyed to the upper end of a shaft 6. Interposed between the hub 7 and a bearing 5" is a thrust bearing 10. The chuck 8 is provided in its upper surface with a plurality of radially extending grooves 53 having undercut edges. The sections of the reforming member 52 are slidably mounted at their lower ends in these radial grooves and each section of the member has a stem 54 extending downwardly through a radial slot 55 in the chuck and through a cam slot 56 in a plate 57 journaled upon the hub 7' and engaging the lower face of the chuck. The lower end portion of each tendin lugs 59 by means of which it may be v rotated. By loosening the thumb-nuts 58.

and rotating the plate 57, the sections-of the,

re-formingmember 52 may be moved out wardly or inwardly to. the desired position because of the'engagement of the stems 54 in the cam slots .56 When the sections of the re-forming member have been moved to the desired position, they may be clamped in such position by tightening the nuts 58.

Vfhile we have described our method as being carried out by revolving the re-forming member relatively to the article being shaped, it'will be understoodthat the re- 1 forming member may be held stationaryand the article rotated, and it will also be understood thatthe re-forming member may be moved toward and from the article. being re-formed instead of the articlebeing moved; toward and from the re-forming member.

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Moreover the re-forming. member might be rotated in one direction and the article being re-formed rotated in the reverse-direction.

In our broader claims we desire and intend. to cover these alternative methods of opere bet-ween the glass and re-former, irrespective of how such relative movement is obtained.

The advantagesof the presentinvention arise from the provision of an apparatus of. simple constructionwhereby the reshaping or reforming of glass articles may be accomplished in a more expeditious manner than by theusual handv method and at a reduced cost of production without lowering the quality and durability of the articles and without danger of buckling.

We claim:

1. In a method of re-forming articles of glassware, the steps consisting in heating the article to be re-formed to soften the same, engaging said article with a shaping surface, producing relative rotation between said article and surface, and supplying a'cooling mediumv to said shaping surface, substantially as described. i

2. r In apparatus for re-forming articles of glassware, a reforming member, means for holding an article to be re-formed in operative relation to said member, means for producing relative rotation between said hold-( ing means and member, and means for sup plying a cooling medium to said member, substantially as described.

3. In apparatus for re-forming articles of ation, in. whichthereis a relative movement glassware, a chuck, means for rotating said chuck, a re-formmg member mounted on upon relativerotation between said member and chuck, guiding means adjacent said chuck, and means engageable with said guiding means for holding an article to be reformed in operative relation to said re-f'orming" member, substantially as described.

4. In apparatus for re-forming articles of tially as'de'scribed.

5. Inapparatus for re-forming articles of glassware, a re-forming member, means for supporting and rotating said member, a standard adjacent said member, a stop on said standard, a lever journaled on said standard, a spring normally maintaining;

. said lever in engagement with said stop, and

means for supplying a cooling medium to said re-formingmember, comprising a pipe carried by said lever, a nozzle connected to said pipe and adapted to be brought into operative relation to said member by movement of said lever away from said stop, a

valve carried by said pipe, and an abutment respect to said re -forming member, subst'an tially' as described.

6. In apparatus for re-for'ming articl'es of glassware, a supporting table having an opening therein, a verticalhollow shaft joui naled in bearings arranged below said table,

a chuck positioned in a horizontal plane above said table and having a hub secured to the upper end of said shaft, said chuck hav-' ing a recess communicating with the bore of aid shaft, and a cup-like ice-forming mem bcr detachably secured to said chuck and opening at its bottom into said recess, whereby a cooling medium supplied to said re-formin'g member is permitted to drain through said hollow shaft, substantially as described.

7. In apparatus for re-for'ming articles of glassware, a re-forming member formed in a plurality of sections adapted for movement toward and from each other and provided with a shaping surface having a polygonal form in cross-section, substantially as described.

In testimony whereof We have hereunto set our hands.

HARRY.A. BRIDGES. JOHN WM. LAMPARTER. 

